Back again by even more popular demand the Mil Stone 4 weighted wheel spacer kit for the Losi Micro Crawler and Proline Ambush Crawler. Originally these kits were $34.99 
NOW ONLY $29.99 with free standard shipping...You cant beat that with a stick!

 These wideners offset each side three millimeters for a total of six millimeters of extra width.  Each spacer and barrel nut add approximately nine (9) grams to each wheel (scale in picture not included) adding a respectable 27 grams at the lowest point possible resulting in a much improved CoG. The barrel nut is flush with rim and should fit under any washer type weights. They are for sure compatible with the stock Losi wheels and Hot Racing Bead Lock alloys. I have also been told through feedback they are a direct fit for the Proline Ambush Crawler as well.  The spacer is precision machined brass and the barrel nut is aircraft grade 303 stainless.  Steel is real!  Gone are the days of stripped out plastic nuts.  The stainless barrel nut are also compatible with the stock wheel wrench.  This kit is not for the Losi Trail Trekker, We have a separate kit for the Trail Trekker.  We know of no other single after market improvement to a Micro Crawler that enhances performance as dramatically as this kit. If you have or know someone who has a Losi Micro Crawler, you cannot go wrong with this custom part. We are the only producers of this product and we have just completed our fourth production run.  The first, second, and third run of 100 kits sold quickly so don't wait.

 Mil Stone™ Pulverize the competition.